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• Error "Broken file, keyframe not correctly marked" [on hold]

  11 avril 2017, par Александр Патейчук

  When I open a certain .ogv file, I get an error in the dump

  [ogg @ 00f0c400] Broken file, keyframe not correctly marked.

  And I can not play the audio track (the video plays normally), although the VLC media player reproduces this format normally.

  Is it possible to fix "keyframe not correctly marked" ? Other formats with the same code are played back normally.

• OpenCV VideoWriter using ffmpeg with "Could not open codec 'libx264'" Error

  19 avril, par user2262504

  I am new to OpenCV, and I want write Mat images into video using VideoWriter on Ubuntu 12.04. But when constructing VideoWriter, errors came out.

  



  It seems that OpenCV invoke ffmpeg API using default parameters and ffmpeg invoke x264 using its default parameters. Then these setting is broken for libx264. Thus the "Could not open codec 'libx264'" error.

  



  Anyone has ideas to solve this problem ?

  



  More specifically :

  



  

  1. anyone knows where and how OpenCV invoke ffmpeg API ?

  


  2. how to change ffmpeg default settings using code, hopefull, can be easily embeded into OpenCV ?

  


  3. will changes of default in ffmpeg be carried to libx264 ?

  


  



  Errors :

  



  1. Uising CV_FOURCC(&#x27;H&#x27;, &#x27;2&#x27;, &#x27;6&#x27;, &#x27;4&#x27;)&#xA;[libx264 @ 0x255de40] broken ffmpeg default settings detected&#xA;[libx264 @ 0x255de40] use an encoding preset (e.g. -vpre medium)&#xA;[libx264 @ 0x255de40] preset usage: -vpre <speed> -vpre <profile>&#xA;[libx264 @ 0x255de40] speed presets are listed in x264 --help&#xA;[libx264 @ 0x255de40] profile is optional; x264 defaults to high&#xA;Could not open codec &#x27;libx264&#x27;: Unspecified error&#xA;&#xA;2. Using FOURCC = -1 to invoke user customized codec&#xA;OpenCV Error: Unsupported format or combination of formats (Gstreamer Opencv &#xA;backend doesn&#x27;t support this codec acutally.) in CvVideoWriter_GStreamer::open, &#xA;file /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp, &#xA;line 505 terminate called after throwing an instance of &#x27;cv::Exception&#x27;&#xA;what():  /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp:&#xA;505: error: (-210) Gstreamer Opencv backend doesn&#x27;t support this codec acutally.&#xA;in function CvVideoWriter_GStreamer::open&#xA;</profile></speed>

  



  Codes :

  



  int main(int argc, char *argv[])
{
    VideoWriter outputVideo;
    bool fourcc_on = true; //switch on / off different error
    if (fourcc_on)
        outputVideo.open("outVideo.avi", CV_FOURCC('H', '2', '6', '4'), 25, Size(100, 100), true);
    else
        outputVideo.open("outVideo.avi", -1, 25, Size(100, 100), true);

    if (!outputVideo.isOpened())
    {
        cout  << "Could not open the output video for write" << endl;
        return -1;
    }
    return 0;
}


  



  OpenCV Configuration :

  



  -- Detected version of GNU GCC: 46 (406)
-- Found OpenEXR: /usr/lib/libIlmImf.so
-- Looking for linux/videodev.h
-- Looking for linux/videodev.h - not found
-- Looking for linux/videodev2.h
-- Looking for linux/videodev2.h - found
-- Looking for sys/videoio.h
-- Looking for sys/videoio.h - not found
-- Looking for libavformat/avformat.h
-- Looking for libavformat/avformat.h - found
-- Looking for ffmpeg/avformat.h
-- Looking for ffmpeg/avformat.h - not found
-- Could NOT find JNI (missing:  JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH) 
-- 
-- General configuration for OpenCV 2.4.8 =====================================
--   Version control:               unknown
-- 
--   Platform:
--     Host:                        Linux 3.8.0-38-generic x86_64
--     CMake:                       2.8.7
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               RELEASE
-- 
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ Compiler:                /usr/bin/c++  (ver 4.6)
--     C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
--     C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
--     C Compiler:                  /usr/bin/gcc
--     C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
--     C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):      
--     Linker flags (Debug):        
--     Precompiled headers:         YES
-- 
--   OpenCV modules:
--     To be built:                 core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib python stitching superres ts videostab
--     Disabled:                    world
--     Disabled by dependency:      -
--     Unavailable:                 androidcamera dynamicuda java
-- 
--   GUI: 
--     QT:                          NO
--     GTK+ 2.x:                    YES (ver 2.24.10)
--     GThread :                    YES (ver 2.32.4)
--     GtkGlExt:                    NO
--     OpenGL support:              NO
-- 
--   Media I/O: 
--     ZLib:                        /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.3.4)
--     JPEG:                        /usr/lib/x86_64-linux-gnu/libjpeg.so (ver )
--     PNG:                         /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.2.46)
--     TIFF:                        /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 - 3.9.5)
--     JPEG 2000:                   /usr/lib/x86_64-linux-gnu/libjasper.so (ver 1.900.1)
--     OpenEXR:                     /usr/lib/libImath.so /usr/lib/libIlmImf.so /usr/lib/libIex.so /usr/lib/libHalf.so /usr/lib/libIlmThread.so (ver 1.6.1)
-- 
--   Video I/O:
--     DC1394 1.x:                  NO
--     DC1394 2.x:                  YES (ver 2.2.0)
--     FFMPEG:                      YES
--       codec:                     YES (ver 55.58.105)
--       format:                    YES (ver 55.37.101)
--       util:                      YES (ver 52.78.100)
--       swscale:                   YES (ver 2.6.100)
--       gentoo-style:              YES
--     GStreamer:                   
--       base:                      YES (ver 0.10.36)
--       app:                       YES (ver 0.10.36)
--       video:                     YES (ver 0.10.36)
--     OpenNI:                      NO
--     OpenNI PrimeSensor Modules:  NO
--     PvAPI:                       NO
--     GigEVisionSDK:               NO
--     UniCap:                      NO
--     UniCap ucil:                 NO
--     V4L/V4L2:                    Using libv4l (ver 1.0.1)
--     XIMEA:                       NO
--     Xine:                        NO
-- 
--   Other third-party libraries:
--     Use IPP:                     NO
--     Use Eigen:                   NO
--     Use TBB:                     NO
--     Use OpenMP:                  NO
--     Use GCD                      NO
--     Use Concurrency              NO
--     Use C=:                      NO
--     Use Cuda:                    NO
--     Use OpenCL:                  YES
-- 
--   OpenCL:
--     Version:                     dynamic
--     Include path:                /home/shixudongleo/Downloads/opencv-2.4.8/3rdparty/include/opencl/1.2
--     Use AMD FFT:                 NO
--     Use AMD BLAS:                NO
-- 
--   Python:
--     Interpreter:                 /usr/bin/python (ver 2.7.3)
--     Libraries:                   /usr/lib/libpython2.7.so
--     numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.6.1)
--     packages path:               lib/python2.7/dist-packages
-- 
--   Java:
--     ant:                         NO
--     JNI:                         NO
--     Java tests:                  NO
-- 
--   Documentation:
--     Build Documentation:         NO
--     Sphinx:                      NO
--     PdfLaTeX compiler:           /usr/bin/pdflatex
-- 
--   Tests and samples:
--     Tests:                       YES
--     Performance tests:           YES
--     C/C++ Examples:              NO
-- 
--   Install path:                  /usr/local
-- 
--   cvconfig.h is in:              /home/shixudongleo/Downloads/opencv-2.4.8/build
-- -----------------------------------------------------------------
-- 
-- Configuring done
-- Generating done
-- Build files have been written to: /home/XXX/Downloads/opencv-2.4.8/build


  



  FFMPEG

  



  ffmpeg is enable to support OpenCV and libx264 is enabled when compiling ffmpeg.
By using ffmpeg command line, libx264 is running normally.

  



  $ ffmpeg -i test.avi -vcodec libx264 test.mp4
ffmpeg -i test.avi -vcodec libx264 test.mp4 > ~/Downloads/ffmpeg_log.txt
ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
  built on Apr 24 2014 16:39:51 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-shared --enable-pic
  libavutil      52. 78.100 / 52. 78.100
  libavcodec     55. 58.105 / 55. 58.105
  libavformat    55. 37.101 / 55. 37.101
  libavdevice    55. 13.100 / 55. 13.100
  libavfilter     4.  4.100 /  4.  4.100
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
Input #0, avi, from 'test.avi':
  Duration: 00:00:03.73, start: 0.000000, bitrate: 1757 kb/s
    Stream #0:0: Video: msvideo1 (CRAM / 0x4D415243), rgb555le, 320x240, 1781 kb/s, 15 tbr, 15 tbn, 15 tbc
    Metadata:
      title           : julius.avi Video #1
File 'test.mp4' already exists. Overwrite ? [y/N] y
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x25d08e0] using cpu capabilities: none!
[libx264 @ 0x25d08e0] profile High 4:4:4 Predictive, level 1.2, 4:4:4 8-bit
[libx264 @ 0x25d08e0] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'test.mp4':
  Metadata:
    encoder         : Lavf55.37.101
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 320x240, q=-1--1, 15360 tbn, 15 tbc
    Metadata:
      title           : julius.avi Video #1
Stream mapping:
  Stream #0:0 -> #0:0 (msvideo1 -> libx264)
Press [q] to stop, [?] for help
frame=   56 fps=0.0 q=-1.0 Lsize=     321kB time=00:00:03.60 bitrate= 731.0kbits/s    
video:320kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.409949%
[libx264 @ 0x25d08e0] frame I:3     Avg QP:15.36  size:  7975
[libx264 @ 0x25d08e0] frame P:38    Avg QP:26.05  size:  6230
[libx264 @ 0x25d08e0] frame B:15    Avg QP:28.25  size:  4418
[libx264 @ 0x25d08e0] consecutive B-frames: 46.4% 53.6%  0.0%  0.0%
[libx264 @ 0x25d08e0] mb I  I16..4:  1.4% 72.8% 25.8%
[libx264 @ 0x25d08e0] mb P  I16..4:  1.6%  5.7% 15.1%  P16..4:  7.6%  6.3%  7.4%  0.0%  0.0%    skip:56.3%
[libx264 @ 0x25d08e0] mb B  I16..4:  0.2%  1.0%  2.0%  B16..8: 13.3%  7.8%  8.7%  direct: 8.3%  skip:58.8%  L0:34.9% L1:36.6% BI:28.5%
[libx264 @ 0x25d08e0] 8x8 transform intra:37.7% inter:2.3%
[libx264 @ 0x25d08e0] coded y,u,v intra: 52.1% 42.1% 30.1% inter: 19.6% 9.2% 5.2%
[libx264 @ 0x25d08e0] i16 v,h,dc,p: 56% 17% 24%  2%
[libx264 @ 0x25d08e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 16% 68%  1%  1%  1%  1%  1%  1%
[libx264 @ 0x25d08e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 18% 28%  5%  6%  5%  7%  5%  6%
[libx264 @ 0x25d08e0] Weighted P-Frames: Y:31.6% UV:21.1%
[libx264 @ 0x25d08e0] ref P L0: 70.5%  9.0% 12.1%  6.5%  2.0%
[libx264 @ 0x25d08e0] ref B L0: 91.3%  8.7%
[libx264 @ 0x25d08e0] kb/s:700.56


  


• ffmpeg error "No such file or directory" while compiling a video file compression

  13 janvier 2016, par Abraham Gharyali

  Firstly I have checked many questions and answers related to my question, but unfortunately none of them solves my problem.

  I have implemented ffmpeg library in my project, using it for 2 tasks :

  1). adding watermark on video.

  2). video compression.

  I am able to apply watermark on recorded video successfully using this command :

  {"-y" ,"-i", "/storage/emulated/0/Booms/Videos/video1122150738.mp4","-strict","experimental", "-vf", "movie="
  
  + watermarkFile + " [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10 [out]","-s", "320x240","-r", "30", "-b", "15496k", "-vcodec", "mpeg4","-ab", "48000", "-ac", "2", "-ar", "22050", "/storage/emulated/0/Shared/Videos/video.mp4"}

  "watermarkFile" is the location of .png watermark file

  Now I need to compress video, for that i used this command :

  "ffmpeg -i "+"/storage/emulated/0/Booms/Videos/video1122150738.mp4"+" -vcodec mpeg4 -s 320x240 -r 25 -y "+"/storage/emulated/0/Shared/Videos/video.mp4";

  It gives error "No such file or directory". please see the logs.

  01-11 15:32:39.283 28027-28027/ I/FFmpeg: Loading FFmpeg for armv7-neon CPU
  
  01-11 15:32:39.439 28027-28027/ D/FFMPEG: onSuccess.
  
  01-11 15:32:39.440 28027-28027/ D/FFMPEG: onFinish.
  
  01-11 15:32:55.584 28027-28027/ D/FFMPEG compress: input path: /storage/emulated/0/Booms/Videos/video1122150738.mp4
  
  01-11 15:32:55.585 28027-28027/ D/FFMPEG compress: output path: /storage/emulated/0/Shared/Videos/video.mp4
  
  01-11 15:32:55.587 28027-28027/ D/FFMPEG compress: Started.
  
  01-11 15:32:55.618 28027-28089/ D/FFmpeg: Running publishing updates method
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress: WARNING: linker: /data/data/packge_name/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress: ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavutil      54.  7.100 / 54.  7.100
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavcodec     56.  1.100 / 56.  1.100
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavformat    56.  4.101 / 56.  4.101
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavdevice    56.  0.100 / 56.  0.100
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavfilter     5.  1.100 /  5.  1.100
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Progress:   libswscale      3.  0.100 /  3.  0.100
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Progress:   libswresample   1.  1.100 /  1.  1.100
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Progress:   libpostproc    53.  0.100 / 53.  0.100
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Progress: ffmpeg -i /storage/emulated/0/Booms/Videos/_video1122150738.mp4 -vcodec mpeg4 -s 320x240 -r 25 -y /storage/emulated/0/Shared/Videos/video.mp4: No such file or directory
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Failure: WARNING: linker: /data/data/package_name/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
  
                                                                                ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
  
                                                                                  built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
  
                                                                                  configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
                                                                                  libavutil      54.  7.100 / 54.  7.100
  
                                                                                  libavcodec     56.  1.100 / 56.  1.100
  
                                                                                  libavformat    56.  4.101 / 56.  4.101
  
                                                                                  libavdevice    56.  0.100 / 56.  0.100
  
                                                                                  libavfilter     5.  1.100 /  5.  1.100
  
                                                                                  libswscale      3.  0.100 /  3.  0.100
  
                                                                                  libswresample   1.  1.100 /  1.  1.100
  
                                                                                  libpostproc    53.  0.100 / 53.  0.100
  
                                                                                ffmpeg -i /storage/emulated/0/Booms/Videos/video1122150738.mp4 -vcodec mpeg4 -s 320x240 -r 25 -y /storage/emulated/0/Shared/Videos/video.mp4: No such file or directory
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Finished.

  for both operations i input .mp4 file and need .mp4 file in output.

  Same process works for watermarking and not working for compression.

  My compress command is correct because I checked the same command compressing video in my windows pc using command prompt.

  I don’t understand what i am doing wrong.

  Any help would be appreciated.